Results 1 to 10 of 10

Thread: Tire balance with TPM

  1. #1
    RadRider radrider's Avatar
    Join Date
    Apr 2006
    Location
    Weston, FL
    Posts
    117

    Question Tire balance with TPM

    I replaced my tires on the R1200R LC with PR4s. All went well but upon balancing the wheels/tires alot of weight is required to balance them. The front is balanced with 103gms and the rear with 78gms using a static balancer. The weight is needed on the opposite side of the valve and the TPM sensor. The BMW specs are within 5gms for the front and within 45gms for the rear. The maximum weight is 80gms. Should I remount the tires and rotate them and see if it changes or should I just place 80gms and call it a day?
    RadRider
    2015 R1200R, 2015 R1200RT
    MOA #118928
    IBA # 46323

  2. #2
    not so retired henzilla's Avatar
    Join Date
    Sep 2006
    Location
    CENTEX USA
    Posts
    10,301
    I would try rotating it before adding a lot of weight.

    I think someone else just had a heavier than usual spot Michelin tire the other day as well.

    http://forums.bmwmoa.org/showthread....lancing-Issues
    Steve Henson-Mod Team and SABMWRA Prez

    Be decisive, right or wrong.The road of life is paved with
    flat squirrels who couldn't make a decision~unknown

  3. #3
    I would dismount the tire and balance the wheel. Then paint-mark those weights as "permanent". Then mount the tire and balance the wheel/tire combination. This will tell you whether it is a wheel issue or a tire issue. It also usually makes balancing future tires easy - often no weight, or very little new weight needed.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  4. #4
    RadRider radrider's Avatar
    Join Date
    Apr 2006
    Location
    Weston, FL
    Posts
    117
    Thanks for the advice. I will remount and rebalance.
    RadRider
    2015 R1200R, 2015 R1200RT
    MOA #118928
    IBA # 46323

  5. #5
    Boxer Fan JT_R1200S's Avatar
    Join Date
    Jun 2013
    Location
    Reno, NV
    Posts
    109
    Good point about balancing the wheel for the TMP before putting the tires on I like that, I never had too many issues with my 09 RT, but I will check this when I do the tires on my new R1200R LC.
    JT
    (2015 R1200R, HP2 Sport #168, 2003 GL1800)

  6. #6
    Enjoy The Ride saddleman's Avatar
    Join Date
    Apr 2009
    Location
    Huntersville N.C.
    Posts
    500
    I always balance the wheel with TPS & leave those weight alone. I then re balance after the tire is mounted & add weights for the tire. Some of the time I can just leave the factory BMW weights on & add weights for the tire.
    Dave Selvig
    2008 Black LT
    2004 Black LT
    2000 Canyon Red LT

  7. #7
    RadRider radrider's Avatar
    Join Date
    Apr 2006
    Location
    Weston, FL
    Posts
    117
    Can we assume the wheels and tires come well balanced from the factory? Every new R12R I have seen has the same location and amount of weights on the front with no weights on the rear. Does it really matter?
    RadRider
    2015 R1200R, 2015 R1200RT
    MOA #118928
    IBA # 46323

  8. #8
    Quote Originally Posted by radrider View Post
    Can we assume the wheels and tires come well balanced from the factory? Every new R12R I have seen has the same location and amount of weights on the front with no weights on the rear. Does it really matter?
    I am willing to expect that an out-of-the-crate bike from BMW would have the wheels/tires on it balanced. That of course goes away at the first tire change.

    Rear can be a bit out of balance without it being noticed, especially on a two-up or heavily loaded camping rally bike. But ride the same bike briskly, solo with no luggage and the imbalance often appears to the rider.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  9. #9
    not so retired henzilla's Avatar
    Join Date
    Sep 2006
    Location
    CENTEX USA
    Posts
    10,301
    Quote Originally Posted by radrider View Post
    Can we assume the wheels and tires come well balanced from the factory? Every new R12R I have seen has the same location and amount of weights on the front with no weights on the rear. Does it really matter?
    Bro in laws 07 R12R took 2 oz to balance just the rear rim. His 09 only took 1/2. H's would need maybe 1/4, so I just balance at tire install.
    The Michelins PR's from France from my unofficial results of changing a "few" sets rarely needed tweaking if the rim was balanced, either by me or luck in rim casting/machining. The Spanish ones fairly consistent, the Thailand stamped ones have often taken more playing with the get balanced. Both PR's and Anakees from that plant seem to be a little off.
    I use the bar code as a reference to be consistent and have rotated a tire 180 to try to eliminate the need for a lot of weight,sometimes it works...sometimes you just get close and be happy.

    And yes, it matters on most bikes with most riders, especially a front wheel as mentioned. YRMV and that's OK.
    Steve Henson-Mod Team and SABMWRA Prez

    Be decisive, right or wrong.The road of life is paved with
    flat squirrels who couldn't make a decision~unknown

  10. #10
    Registered User
    Join Date
    Mar 2004
    Location
    Northern WV
    Posts
    699
    Quote Originally Posted by PGlaves View Post
    I would dismount the tire and balance the wheel. Then paint-mark those weights as "permanent". Then mount the tire and balance the wheel/tire combination. This will tell you whether it is a wheel issue or a tire issue. It also usually makes balancing future tires easy - often no weight, or very little new weight needed.

    That's what I did on my GSA. This is the front and after removing the old tires balanced the wheel which required two large weights (1 oz each) opposite the stem and those stay. The current tire took two small weights (1/4 oz each). The weights are difficult to see because I painted them black.

    16 R1200RS, 93 R100R, 17 Versys x300, 16 Africa Twin DCT, 15 Road King, 16 V7 Stone No car is as fun to drive as any motorcycle is to ride.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •